The Mega Challenge

[Reprevise]

So I haven’t continued watching the video but I just did the mega challenge and it works fine for me! I want to show you my script and see if you agree and if you guys have any things that I need to change!
Below is my Level script which is inside of a Level GameObject which is prefabbed in all of my two levels.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class Level : MonoBehaviour
{

    public static int breakableBlocks;
    [SerializeField] GameObject blocks;

    private void Start()
    {
        breakableBlocks = blocks.transform.childCount;
        print(breakableBlocks);
    }

    public static void BlockBroken()
    {
        if (breakableBlocks > 0)
        {
            breakableBlocks -= 1;
            print(breakableBlocks);
        }
    }

    private void Update()
    {
        CheckIfAllBlocksBroken();
    }

    private void CheckIfAllBlocksBroken()
    {
        if (breakableBlocks == 0)
        {
            LoadNextLevel();
        }
    }

    private static void LoadNextLevel()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
    }

}

Here is my Block script where when a collision is registered, it calls the BlockBroken method above:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(AudioSource))]
public class Block : MonoBehaviour
{

    [SerializeField] AudioClip breakSFX;

    private void OnCollisionEnter2D(Collision2D collision)
    {
        AudioSource.PlayClipAtPoint(breakSFX, Camera.main.transform.position);
        Level.BlockBroken();
        Destroy(gameObject);
    }

}